Формова різноманітність і життєвий стан модрини у насадженнях Західного Полісся [Variety of forms and vitality of the larch in the stands of Western Polissia]
Journal Title: Наукові праці Лісівничої академії наук України - Year 2016, Vol 14, Issue
Abstract
It was not possible to distinguish forms for Larix decidua Mill., Larix kaempferi Carr., Larix eurolepis Henry by the angle of branching due to the high variability of this feature at different heights of the trunk during the life cycle of individuals. Also the attempt to identify forms of the studied larch varieties by the thickness of knots failed due to the strong dependence of this characteristic on the age and density of stands, the distribution pattern of individual trees in the forest. The density of the crown, in contrast to the angle of branching, is more stable attribute of the form, which gives grounds for distinguishing on the territory of Western Polissia the forms of Larix decidua with open and medium density canopy; the forms of Larix kaempferi with dense and medium density canopy; the forms of Larix eurolepis with dense crown. In terms of clean-boled trees, there are three forms of Larix decidua with satisfactory, good and very good cleaning; in other varieties of larch, in view of the limited age of investigated stands, no forms with such characteristics have been found. Six forms by the type of bark were identified for Larix decidua – thick-barked, alder-like, thin-barked, pine-like platy bark, broad-scaled bark , narrow-ridged bark.; the last two types of bark are the most common. For Larix kaempferi there are three forms – alder-like bark, narrow-ridged bark, and narrow-scaled bark, the last of which is the most common; Larix eurolepis - only two forms are distinguished according to the type of bark – broad-scaled and narrow-scaled. The vitality of larch varieties such as European, Japanese and hybrid in the young stands up to 20 years of age is determined by the degree of differentiation of trees in stands, it is fairly active in this age range with the result that in the plantations there are individuals in different categories of vitality. The European larch, as light-demanding species, is characterized by somewhat lower vitality compared to other types of larch. In middle-aged, maturing and mature stands of European larch, the predominant categories are completely healthy and relatively healthy individuals (about 90%). The most productive stands with participation of Larix decidua in Western Polissia have a medium-density crown with a thin or middle-thickness knots, clean trunks and narrow-ridged bark. Highly-productive stands with participation of Larix kaempferi are characterized by trees with dense canopy, knots of medium thickness, satisfactorily cleaned trunks and narrow-scaled type of bark. Highly-productive stands with participation of Larix eurolepis have a dense crown, thin knots, satisfactorily cleaned trunks with broad-scaled bark.
Authors and Affiliations
Iurii Debryniuk, Serhiy Belelya
Keywords
Related Articles
- EP ID EP199248
- DOI -
- Views 124
- Downloads 0
The influence of plantation-type forests on the water-based and physical properties of forest soil in the conditions of the Western Forest-Steppe of Ukraine Вплив лісових насаджень плантаційного типу на водно-фізичні властивості лісового ґрунту в умовах Західного Лісостепу України
There is a close interaction between stands of different species composition and soil, which can be influenced by changing the composition of the stand. The issue is particularly relevant in terms of the temporary intr...
Фітомеліоративна ефективність вуличних фітоценозів як один із параметрів екологічного виміру збалансованого розвитку міста [Vegetative reclamation efficiency of street phytocoenoses as one of the parameters of the environmental measurement of balanced development of the city]
According to the methodology of measurement, balanced development is evaluated using the corresponding index in three-dimension space: environmental, economic and socio-institutional. To calculate the index of the enviro...
Особливості вирощування деревної маси і садивного матеріалу тополі у безверхівковому режимі [Features of of woody biomass and planting-stock of poplar in “stump” type of plantation management]
Exploitation of poplar energy plantations and nursery management may be based on so-called "stump" approach, which should be understood as cutting of cultivars stem, usually one-year old, and allows already for next year...
Електрометрична оцінка листкового апарату рослин культиварів Acer platanoides L. у насадженнях міста Києва з різним ступенем антропогенної трансформації [Electrometric assessment of leaf blade of Acer platanoides L. cultivars in Kyiv city plantings with varying degrees of anthropogenic transformation]
Due to the increasing xerophytization of environment caused by global cli-mate change, one of the main criteria for the plant selection for usage in green building is their level of drought resistance. As we know, drough...
Особливості пошкодження пожежами лісів Полісся [Features of forest damage after wildfires in Polissya]
Nowadays forest fires have become a major problem in many countries and cause extensive losses. Despite of significant rainfall a problem of fires remains pressing issue for the forests of the Rivne region. During the pe...